User page for:

dani3l

Liked Puzzles

16 likes 6.2
(Challenging)

Why is that if p is a prime number bigger than 3, then p^2-1 is always divisible by 24 ...

Added about 1 year ago by dani3l currently with 39 comments

16 likes 6.9
(Challenging)

You are shrunk to the height of a nickel and your mass is proportionally reduced so as ...

Added about 1 year ago by ig0r currently with 45 comments

15 likes 2.6
(Fairly Easy)

The image is actually still, but it appears as if the circular snakes are rotating.

Added about 1 year ago by dani3l currently with 33 comments

22 likes 3.8
(Fairly Easy)

How many degrees are there in the angle between the hour and minute hands of a clock wh...

Added about 1 year ago by vette982 currently with 28 comments

4 likes 5.8
(Moderate)

(5 + 5) x (5 + 5) = 100 Four 5's written with simple arithmetical signs can be arran...

Added about 1 year ago by dani3l currently with 22 comments

10 likes 2.7
(Fairly Easy)

What question can you never answer "yes" to?

Added about 1 year ago by johnp currently with 48 comments

4 likes 5.3
(Moderate)

Two ferryboats start at the same instant from opposite sides of a river traveling acros...

Added over 2 years ago by Valentin currently with 36 comments

11 likes 6.1
(Challenging)

A man is stuck inside an all brick building (floor, ceiling, and walls are all brick), ...

Added over 2 years ago by nouvieux currently with 19 comments

13 likes 3.2
(Fairly Easy)

Quick,without using a calculator, what is the sum of all numbers between 1 and 100 incl...

Added over 2 years ago by Valentin currently with 35 comments

11 likes 5.6
(Moderate)

This problem was first publicized by Karl Fabel, a German chess problemist. Find a m...

Added over 2 years ago by dani3l currently with 38 comments

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